123968899 has 2 divisors, whose sum is σ = 123968900. Its totient is φ = 123968898.

The previous prime is 123968849. The next prime is 123968909. The reversal of 123968899 is 998869321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123968899 is a prime.

It is not a weakly prime, because it can be changed into another prime (123968839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61984449 + 61984450.

It is an arithmetic number, because the mean of its divisors is an integer number (61984450).

Almost surely, 2^123968899 is an apocalyptic number.

123968899 is a deficient number, since it is larger than the sum of its proper divisors (1).

123968899 is an equidigital number, since it uses as much as digits as its factorization.

123968899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 55.

The square root of 123968899 is about 11134.1321619604. The cubic root of 123968899 is about 498.6214010902.

The spelling of 123968899 in words is "one hundred twenty-three million, nine hundred sixty-eight thousand, eight hundred ninety-nine".